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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Rove, Carrion and Fungus Beetles (Staphylinoidea) » Rove Beetles (Staphylinidae) » Ant-loving Beetles (Pselaphinae) » Rybaxis » Rybaxis conjuncta
Photo#46472
Ant-loving Beetle - Rybaxis conjuncta - male
Copyright © 2006 tom murray

Ant-loving Beetle - Rybaxis conjuncta - Male
Bolton, Worcester County, Massachusetts, USA
April 1, 2006
Size: 2mm
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Contributed by tom murray on 1 April, 2006 - 6:51pm
Last updated 11 April, 2006 - 10:05pm

Pselaphinae: Rybaxis conjuncta
It was a male, and thus simple to identify.
… Donald S. Chandler, 11 April, 2006 - 2:56pm login or register to post comments

Staphylinidae: Pselaphinae: Rybaxis sp.
This is in a completely different section of the Pselaphinae - a member of Rybaxis, possibly R. mystica. The broad V-shaped sulcus on the pronotum leads to ready recognition of this genus, coupled with some other features. A male would be necessary to be sure of the species (males have metasternal tubercles and a distinctive tubercle on the second abdominal sternite). This color pattern is found in a number of genera. This picture on the white plate turned out well.

Usually found along margins of bogs or swamps, or in them. Tyrus semiruber would always be found under conifer bark.
… Donald S. Chandler, 1 April, 2006 - 8:19pm login or register to post comments

 
Thanks Don
There were 2 of these under a rock in a marshy area, and I collected both, so maybe the other one is a male. Like you said, my Tyrus semiruber was under pine bark.
… tom murray, 1 April, 2006 - 10:20pm login or register to post comments

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